Interface-Engineered g-C3 N4 @CuAl-LDH Composite for Photocatalytic Degradation of Bromophenol Blue Dye

The development of effective environmental remediation materials is essential for solving the world's pollution problems. In this study g-C ₃ N ₄ @CuAl-LDH composite was synthesized for the photocatalytic removal of Bromophenol blue (BPB) dye from water. The enhanced surface area, active sites, and surface functional groups of the g-C ₃ N ₄ @CuAl-LDH composite lead to higher degradation capabilities for dye. The composites exhibit improved photocatalytic efficiency when exposed to visible light because of effective charge separation and transfer. The synthesized g-C ₃ N ₄ @CuAl-LDH composite was evaluated for the removal of BPB dye from water under various factors like pH and contact time of dye solutions. According to this study percentage degradation of g-C ₃ N ₄ @CuAl-LDH composite achieved to 83.37% after 60 minutes of contact time. Furthermore the value of correlation coefficient (R ² =0.95757) suggested the first order kinetics with rate constant K _t (min ^-1 ) = 0.02961. The g-C ₃ N ₄ @CuAl-LDH composite was found to be most active in photocatalysis under alkalinity with a BPB removal of 99.08% at pH 9. The most important reactive species regulating the breakdown of BPB, according to radical scavenging tests, are superoxide radicals (O ₂ ^.- ); hydroxyl intermediates and holes produced in the presence of light are of second importance. Overall, this study serves as a foundation for the synthesis of advanced materials based on LDH for catalytic applications.